Poisoning and Misidentification of Mushrooms and Plants

If this may be happening now

If someone has eaten a mushroom or plant and you are worried, call 911 in an emergency, or call US Poison Help at 1-800-222-1222 (free, 24 hours, from anywhere in the United States). [1][2] In the UK, the NHS says to call 999 or go to A&E if someone may have swallowed something harmful, and that symptoms can take a few hours or days to start. [3]

Do not make the person vomit unless poison control or a clinician tells you to. [2][3] Keep some of the substance or its packaging to show doctors. [3] Poison centers ask for the person's age, weight and condition, the plant's name if known, when it was swallowed and how much. [2] For other countries, see Poison Help by Country and Poisoning: What to Do First.

What this page is, and is not

This page explains why mix-ups are dangerous. It does not teach anyone to tell mushrooms or plants apart. A photo, a name or a guidebook description is not a safety guarantee; see Species Identification and Naming for why. Evidence labels used here: established (stated by a health agency or poison center), insufficient evidence and preprint (not yet peer reviewed).

Why misidentification matters

The National Institute on Drug Abuse (NIDA) warns of the risk of misidentifying mushrooms and taking a toxic mushroom instead of one containing psilocybin, and says exposures reported to poison control centers have increased in recent years. [4]

Several mushroom groups contain amatoxins, which damage the liver. The University of Utah poison center lists Amanita, Galerina and Lepiota as examples, and notes that psychedelic mushrooms themselves do not cause liver damage. [5] That is the key point: a mix-up can bring a danger that has nothing to do with the effect the person expected. [5]

A cautionary example about certainty

In December 2024 the same poison center issued an alert about a death after someone reportedly ate street-bought "psychedelic mushrooms" and developed liver failure. In April 2025 it updated the alert: further investigation determined mushrooms were not responsible for the death. [5] Its original alert had also called it highly unusual for liver-toxic mushrooms to be mistaken for psychedelic ones. [5] The lesson is that early reports can be wrong, and that this site should not treat any single case as proof of how often look-alike poisoning happens. Proper evidence not found here for a reliable rate of such mix-ups; we checked the poison-center and NIDA pages above.

A 2026 preprint (not yet peer reviewed) reports that one Galerina species produces both psilocybin and amatoxins, which would mean that "contains psilocybin" and "safe" are not the same thing. [6] Treat this as an early finding.

Plants are not automatically safer

Plant poisoning can also look like a "psychedelic" experience. For example, MedlinePlus describes blue nightshade poisoning as including delirium, agitation, confusion and hallucinations, alongside vomiting, slow pulse and slow breathing. [2] Hallucinations can be a sign of poisoning, not only of an intended effect. See Plant and Mushroom Poisoning for the general safety guide.

Related reading

• Contamination and Adulteration for products that contain things the label does not say.
• When to Seek Urgent Help for warning signs.
• Amanita muscaria, Muscimol and Ibotenic Acid for one commonly confused group.